Resistance of the Codling Moth to DDT Sprays1

Publisher Website
Google Scholar
Abstract
Laboratory studies conducted from 1953 through 1955 with 16 strains of codling moth larvae secured from orchards in Illinois, Indiana, Kentucky, Ohio, and Washington, differ in their susceptibility to DDT. Resistance to DDT was especially noticeable in 3 strains. Two of these strains originated in the state of Washington and one in Ohio. Limited tests with adult moths indicated that the strains resistant as larvae may also be resistant as adults. Control data from several midwestern orchards where other strains originated suggests that it is likely resistance has developed in many instances even though it can not be demonstrated in the laboratory.

This publication has 2 references indexed in Scilit: